Transcript www.cs.karelia.ru

Introduction to Unlicensed Mobile
Access
Contents
• Basic Concept
• Operation Overview
• Major Advantages
Basic Concept
• Unlicensed mobile access is a technology that provides
new access techniques to existing cellular network for
mobile phones.
• It describes a system that allows access to mobile voice,
data and multimedia services over unlicensed spectrum
networks.
• The access techniques used are unlicensed spectrum
operating networks; IEEE 802.11x and Bluetooth
technology
Operation Overview
Operation Overview
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A mobile subscriber with a UMA enabled handset moves into a
permitted unlicensed wireless network.
Once connected the handset contacts the UMA network controller
over the broadband IP access network to be authenticated and
authorized to access GSM voice and GPRS data services via the
unlicensed wireless network.
If approved, the subscriber’s current location information stored in
the core network is updated, and from that point on all mobile voice
and data traffic is routed to the handset via the Unlicensed Mobile
Access Network (UMAN) rather than the cellular radio access
network (RAN).
Operation Overview
ROAMING: When a UMA-enabled subscriber moves outside the range of
an unlicensed wireless network to which they are connected, the
UNC and handset facilitate roaming back to the licensed outdoor
network. This roaming process is completely transparent to the
subscriber.
HANDOVER: If a subscriber is on an active GSM voice call or GPRS
data session when they come within range (or out of range) of an
unlicensed wireless network, that voice call or data session can
automatically handover between access networks with no
discernable service interruption. Handovers are completely
transparent to the subscriber.
Major Advantages
• Seamless roaming and handover between unlicensed
wireless networks and licensed cellular networks.
• Maintain the same mobile device identification on
unlicensed wireless networks and licensed cellular
networks.
• Better coverage area and relatively better quality and low
cost service for the subscriber.
• Better coverage area, better quality service, increase in
revenue for the operator.
• Economically advantageous,and flexible for the operator as
it uses the existing/future core mobile infrastructure.
Thank You